Clamp and locking device for forms for concrete construction



Jan. 27, 1925.

J. L. MONTEN ET AL OLAMP AND LOCKING DEVICE FOR FORMS FOR CONCRETE CONSTRUCTION Filed July- 10, 1922 A Lg 'S /TZ Patented Jan. 27, 1925.,

UNITEDSTATES PATENT erica;

JOI-IN L. MONTEN AND CARL NELSON, OF CHICAGO, ILLINOIS.

CLAMP .AND LOCKING DEVICE F031 FOR-BIS FOR CONCRETE CGNSTRUCTION.

Application mea 'July 1o, 192s. serial no. 574,116.

Fig. 6 is a top plan view of Fig. 5.

In the several views 19 represents the body of our improved form. Its construction and formations are particularly adapted for sheet metal material, which is light, easily and with comparative cheapness stamped with ornamental surface designs, does not adhere to the molded structure like wooden molds, is more durable, etc., as will appear from the hereinafter detailed description. Said body 19 is strengthened against bending strains by bent out edge portions, such as an upper edge fiange 4 which is bent outwardly from the wall-side of the form, an inward horizontal bend 4 and a flange 8 extending from the flange 4 and forming a stop which is designed to bear against the side of the wall FQ as shown most clearly in Figures 2 and 5.

As shown in the cut-away portions 32 in Figure 3, portions of the stop or gauge fiange 8 are struck out therefrom at right angles to form supporting feet, lips, ears, lugs, or rests adapted to rest on top of the structure 9 upon which the molded structure is placed. These feet or supports 3lbeing thin, or merely the thickness of the sheet metal, are easily withdrawn when the plastic material has set, and leave no appreciable marks, scars or recesses that require separate attention after removal of the form. Along its lower edge the form body 19 is strengthened longitudinally by substantially two angle-irons, or the right angle bend that forms the rib or flange 4 and the right angle final bend which provides the stop-plate '8, and these features are retained in the form in its different applications, and whether doubly, as in Figure 2, or singly, as in Figures 5 and 6.

Provision for joining together a plurality of bodies 19 to form longer units of moldstructure, is made in the form of vertical end flanges, or bent out portions, which are adapted to engage a slot 14 in a forked clamp-member 5, as indicated at 10 and 1 4 in Figure 3. The flanges 10 are held against accidental displacement from the slot 14 in a lateral direction, by a slot 14 arranged at right angles to the slot 14 and formed between an enlarged portion 6 of the clamp member 5 and the forked portion containing the slot 14, (as shown on an enlarged scale in Figure 4), said slot 14 being engaged by upwardly projecting lugs 6 which are left as unbent portions of the upper edge To all fic-7mm t may concern:

Be it known that we, JOHN L. MoN'rnN and CARL NnLsoN, former subjects of the King of Sweden, (we have declared our intentions of becoming citizens of the United States), residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Clamping and Locking Devices for Forms l0 for Concrete Construction, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

Our invention relates to improvements in clamps and locking devices for forms for concrete construction designed for use especially in the formation of wall copings, belt courses on building structures, window sills, door sills and watertables for building foundation and like structures.

One object of our'invention is the production of a device of this character which may be readily and quickly erected for use and as readily and easily removed after setting of the concrete for further use. A further object is the provision of a device of this character which will be of an adjustable nature permitting of ready and expeditious adjustment to meet various conditions and requirements, and which will be firm and rigid after application or assembly so as to insure the production of a concrete structure which will be of accurate design and finished appearance'.

A still further object is the production of a device for concrete construction which will be of durable and economical construction and highly eflicient in use. Other objects will appear hereinafter. With this object in view the invention consists in the combinations and arrangements of parts hereinafter described and claimed. The invention will be best understood by reference to the accompanying drawings wherein like numerals refer to corresponding parts.

Fig. 1 is a plan view showing a form for making a wall coping.

Fig. 2 is a cross section including a brick wall portion.

Fig. 3 is a side elevation of Fig.'1.

Fig. 4 shows three different sides of the clamp.

Fig. is an end view of our form, a Section of wall and of a molded sill,

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of thebody .19 after the rib or flange 4 has been Jformed. At the upperrend of the forked portion -22- of the clamp-member 5 the latterhas a screw-threaded bore that is engaged by ascrew 13, Which, as shown in the-.middle View in Figure 4, and on a smaller scale in Figures 2 and 5, may be brought to bear against`V the lugs. 6 or clam )t D D b 7 poraryend-Wall. 18 ing-.any position Ialong thefsbodyy 19 by` clamping .the screw "134 aga-instsaid stiiieningtlange, the plate, .or

endv Wall 1Sk beingl either placed `against the forkeclfportion. of the clamp member. or Vinsertedfinthe slot lll. lvhenthe .endwall 18- lits vvvthe y"slot 414C the flat. sides of theslot 11 Will =hold lit very* firmly"againstl accidental lateraldisplacement offits lower end-by the moderate pressureotthe plastic material.

20. In Fig-.5 thefdotted lines QBrepresent the "bottom-:of the i-fusual ivoodavork frame which may be in positioneither before or after the concrete has been pouredr in.

Provision lisimade for supporting parallel or spaced apart molds'ides 19 'by connecting their` clainp-members v5 through a cross-bar, or a j plurality thereofV Said cross-bar -11- has its respective ends mounted in openings 1 2 transversely to which are screws bores engaged by screws.` 2 which aretightenedagainst the bar 11 afterV it has :been adjusted to hold the sides orfforms'in-'their desiredrelation to eachfother to'formV a structureor molded form 7 as indicated in Figures 1 and 2.. n Y i Thedifferent flange engagements of .the clampY member and the flanges onthe formbody 19, suggestedby comparing'the vertical With theho'rizontal:clamp member 5 in, for instance, Figures 5 and 6, and the .additional uses 'of the-slot 14: also suggested in said figure are susceptible of many adjustments andv arrangements that obviate the ``addi tional .elements 'that must'fbe :provided fior olderiornis of mold structures:.wvhich are adaptedfor only on'ezllind olii structure and mustbe provided With 'a variety of auxiliary members. i V

lVe claim as ourinventionlY l. Afmoldiwall oirfform having bent. out edge portions which? forni stiii'eningribs or flanges,longitudinally of said Wall or form, and-'laterally stiening end "-l'langes, cIampmembers Which r slidably embrace the.y opposite sidesof saidend flanges and couple them together, and? lateral supportingmeans :be-

yond the molding space for saidclanip' members.

2. A mold comprising a form having its opposite edge portions bent out in opposite directions and forming longitudinal strengthening ribs, said form having similar bent out vertical edge portions which form lateral .stifening' ribs, and means which reinforce and couple together abutting lateral stiifening ribs lto lengthen the mold form 3. A mold-form'. having integral 'bent portions Vforming longitudinal and lateral. stilfening..1-ibs, and forked members which clamp ktogether a1id..rei1iforce `the lateral` stiii'ening ribs onabutting forms.

4. Ainold comprising a. form with integralbent portions which form horizontal and. rvertical stifening ribs and astop-` iiange .to engage a walbstructure, and arrangeditov form a projecting ledge, and feet or supports struckout of the bottom edge of the latter to Support said form.

5. A-1noldfo1-m having an upper an le flange and lower double anglelanges. which form @a wall-engagingstop and a. ledge projecting. said mold-form beyondl `the vertical plane of raV rWall, integralV struckout supporting feet which extend from said double angle flanges at the bottom edge of themold, and integralend flanges yon said mold to be clampedto` similar end flanges on. adjacentmold-forms. i

G..A moldeform ywhich comprises a Wall bodyrwith integral=and laterally projecting horizontal andvertical stifening-ribs and integral supporting :feet which project from thebottom of the moldfor1n,1means projectingsaid mold-form beyond the vertical plane of a Wall, and means supporting a plurality of suchiorms in space-apart relationas Walls -i`or `opposite sides of a molded structure.

T. AV mold-form' with Vlaterally bent out horizontal stii'lening flanges, and similarly bent out vertical flanges, in combination With a lslotted clamp which is slidable over the upper ends of said vertical-.flanges to support` an auxiliary end-Wall extending at right angles to said form and support a plurality of said forms in end-to-end alinement. u

SFA mold which confiprises a plurality offorms the end of which meet, outwardly bent {langes-onsaid forms to overlie each other, and a^slotted clamp which straddles the :abutting Vends i' adjacent forms and binds said ends together. i.

QWA; metal Wall Vmold with laterally bent end-flanges, means reinforcing .and-embracing said end-flanges .and detacliably con necting. a plurality thereof to extend the length of said wall, a connecting-bar for saidfreintorcing means, and means. for securing it to 1 said :1nold-Wall.

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10. A mold form which comprises a form unit provided with upwardly projecting lugs, means for coupling together said lugs,

ing device consisting of a slotted block to engage the stilfening ribs of adjacent forms, said block having a transverse opening therethrough to be engaged by the end of a cross-bar, and a screw in said block to engage and hold said end against movement relative to said block.

12. A m'old form for concrete construction which comprises form units having laterally projecting end-flanges, fingers `or lugs which extend from the bottom edges of said units, clamps holding a plurality of said units in alinement, and bars engaged by said clamps to hold parallel forms in spaced apart and alined relation.

13. A mold form comprising a metal unit with laterally projecting bent out edge portions which form thin and integral fingers that extend from the bottom edges of the form and support said form on a wall but adapted to be withdrawn after the molded form' has set or hardened without leaving a disliguring opening or scar in said form.

14:. A supporting clamp for mold-forms which comprises a slotted block designed to occupy a horizontal position, and having a recess therein arranged at right angles to the slotl in said block, said block being arranged to engage an upper flange of a form unit, and a screw in said recess adapted to beclamped against said flange.

15. The combination with form units, 0f

vertical lugs on the ends thereof and flanges,

a slotted block constructed to engage abutting flanges of adjacent units, and a clamp in said block arranged to clamp together said lugs.

16. A mold form and supports therefor, which comprises form units, a slotted block which straddles and is vertically supported by said units and coupling them together, and means holding said units in alinement and in spaced apart parallel relation.

In witness whereof, We have hereunto subscribed our names.

JOHN L. MUNTEN. CARL NELSON. 

